Method of forming metallic tone glitter paint films and the painted objects

Abstract

A metallic tone glitter paint film is formed by applying sequentially a first base metallic paint, a second base glitter paint in which there is compounded a very small scale-like pigment, or a very small scale-like pigment and an aluminum pigment (C), and a clear paint, and baking and hardening. The first base metallic paint comprises aluminum pigment (A) or which the average particle diameter D 50 is from 13 to 40 μm and the average thickness is from 0.4 to 2.5 μm and aluminum pigment (B) of which average particle diameter D 50 is from 4 to 30 μm and the average thickness is from 0.02 to less than 0.4 μm, and the solid fraction ratio (A/B) of the aluminum pigments (A) and (B) is from 90/10 to 10/90 and the solid fraction mass (A+B) of the aluminum pigments (A) and (B) is from 5 to 50 parts by mass per 100 parts by mass of the resin solid fraction.

1. A method of forming a metallic tone glitter paint film comprising:
 applying a first base metallic paint for providing a sense of glitter with a metallic tone to a base material, the first base metallic paint comprising:
 an aluminum pigment (A) of average particle diameter D 50  from 13 to 40 μm and average thickness from 0.4 to 2.5 μm; and 
 an aluminum pigment (B) of average particle diameter D 50  from 4 μm to 30 μm and average thickness from 0.02 to less than 0.4 μm, 
 wherein the ratio (A/B) of the masses of the solid fractions of the aluminum pigments (A) and (B) is from 90/10 to 10/90, and the total mass (A+B) of the solid fractions of the aluminum pigments (A) and (B) is from 5 to 50 parts by mass per 100 parts by mass of the resin solid fraction; 
 
 applying a second base glitter paint to the first base metallic paint wet-on-wet, wherein the first base metallic paint is in an unhardened state, and the second base glitter paint comprising a very small scale-like pigment, or a very small scale-like pigment and an aluminum pigment (C), wherein the very small scale-like pigment is characterized by providing the metallic tone glitter film with a pearlescent gloss; 
 wherein the very small scale-like pigment is selected from the group consisting of metal oxide coated mica pigments, metal oxide coated synthetic mica pigments, metal oxide coated alumina flake pigments, metal oxide coated silica flake pigments, metal oxide coated iron oxides, stainless flakes, metallic titanium flake pigments, plate-like molybdenum sulfide, plate-like bismuth chloride, plate-like iron oxide, cholesteric liquid crystal polymers, and combinations comprising one or more of the foregoing; 
 applying a clear paint to the second base glitter paint wet-on-wet, wherein the second base glitter paint is in an unhardened state; and 
 baking the first base metallic paint, the second base glitter paint, and the clear paint simultaneously at a temperature ranging from room temperature to 160° C., wherein the resulting metallic tone glitter paint film obtains both a pearlescent gloss and a metallic gloss. 
 
     
     
       2. The method of  claim 1  wherein the mass of solid fraction of the very small scale-like pigment in the glitter paint is from 2 to 50 parts by mass per 100 parts by mass of resin solid fraction. 
     
     
       3. The method of  claim 1  wherein at least one of the aluminum pigment (A), the aluminum pigment (B) and the aluminum pigment (C) is selected from the group consisting of aluminum flake pigments, colored aluminum flake pigments, metal oxide coated aluminum flake pigments, vapor deposited aluminum flake pigments, and combinations comprising one or more of the foregoing. 
     
     
       4. The method of  claim 1  wherein the ratio of the aluminum pigment (C) and very small scale-like pigment in the glitter paint is from 0:100 to 50:50 parts by mass. 
     
     
       5. A painted object which is furnished with a paint film which has been formed with the method of  claim 1 . 
     
     
       6. The method of  claim 1  wherein the metal oxide is selected from the group consisting of TiO 2 , Fe 2 O 3 , SnO 2 , ZrO 2 , and combinations thereof. 
     
     
       7. A method of forming a metallic tone glitter paint film comprising:
 applying a first base metallic paint for providing a sense of glitter with a metallic tone to a base material, the first base metallic paint comprising:
 an aluminum pigment (A) of average particle diameter D 50  from 13 to 40 μm and average thickness from 0.4 to 2.5 μm; and 
 an aluminum pigment (B) of average particle diameter D 50  from 4 μm to 30 μm and average thickness from 0.02 to less than 0.4 μm, 
 wherein the ratio (A/B) of the masses of the solid fractions of the aluminum pigments (A) and (B) is from 90/10 to 10/90, and the total mass (A+B) of the solid fractions of the aluminum pigments (A) and (B) is from 5 to 50 parts by mass per 100 parts by mass of the resin solid fraction; 
 
 baking the first base metallic paint at a temperature ranging from room temperature to 160° C.; 
 applying a second base glitter paint to the first base metallic paint, wherein the first base metallic paint is in a hardened state, and the second base glitter paint comprises a very small scale-like pigment, or a very small scale-like pigment and an aluminum pigment (C), wherein the very small scale-like pigment is characterized by providing the metallic glitter film with a pearlescent gloss; 
 wherein the very small scale-like pigment is selected from the group consisting of metal oxide coated mica pigments, metal oxide coated synthetic mica pigments, metal oxide coated alumina flake pigments, metal oxide coated silica flake pigments, metal oxide coated iron oxides, stainless flakes, metallic titanium flake pigments, plate-like molybdenum sulfide, plate-like bismuth chloride, plate-like iron oxide, cholesteric liquid crystal polymers, and combinations thereof; 
 applying a clear paint to the second base glitter paint wet-on-wet, wherein the second base glitter paint is in an unhardened state; and 
 baking the second base glitter paint, and the clear paint simultaneously at a temperature ranging from room temperature to 160° C., wherein the resulting metallic tone glitter paint film obtains both a pearlescent gloss and a metallic gloss. 
 
     
     
       8. The method of  claim 7  wherein the mass of solid fraction of the very small scale-like pigment in the glitter paint is from 2 to 50 parts by mass per 100 parts by mass of resin solid fraction. 
     
     
       9. The method of  claim 7  wherein at least one of the aluminum pigment (A), the aluminum pigment (B) and the aluminum pigment (C) is selected from the group consisting of aluminum flake pigments, colored aluminum flake pigments, metal oxide coated aluminum flake pigments, vapor deposited aluminum flake pigments, and combinations thereof. 
     
     
       10. The method of  claim 7  wherein the ratio of the aluminum pigment (C) and very small scale-like pigment in the glitter paint is from 0:100 to 50:50 parts by mass. 
     
     
       11. A painted object which is furnished with a paint film which has been formed with the method of  claim 7 . 
     
     
       12. The method of  claim 7  wherein the metal oxide is selected from the group consisting of TiO 2 , Fe 2 O 3 , SnO 2 , ZrO 2 , and combinations thereof. 
     
     
       13. A method of forming a metallic tone glitter paint film comprising:
 applying a first base metallic paint for providing a sense of glitter with a metallic tone to a base material, the first base metallic paint comprising:
 an aluminum pigment (A) of average particle diameter D 50  from 13 to 40 μm and average thickness from 0.4 to 2.5 μm; and 
 an aluminum pigment (B) of average particle diameter D 50  from 4 μm to 30 μm and average thickness from 0.02 to less than 0.4 μm, 
 wherein the ratio (A/B) of the masses of the solid fractions of the aluminum pigments (A) and (B) is from 90/10 to 10/90, and the total mass (A+B) of the solid fractions of the aluminum pigments (A) and (B) is from 5 to 50 parts by mass per 100 parts by mass of the resin solid fraction; 
 
 baking the first base metallic paint at a temperature ranging from room temperature to 160° C.; 
 applying a second base glitter paint to the first base metallic paint, wherein the first base metallic paint is in a hardened state, and the second base glitter paint comprises a very small scale-like pigment, or a very small scale-like pigment and an aluminum pigment (C), wherein the very small scale-like pigment is characterized by providing the metallic glitter film with a pearlescent gloss; 
 wherein the very small scale-like pigment is selected from the group consisting of metal oxide coated mica pigments, metal oxide coated synthetic mica pigments, metal oxide coated alumina flake pigments, metal oxide coated silica flake pigments, metal oxide coated iron oxides, stainless flakes, metallic titanium flake pigments, plate-like molybdenum sulfide, plate-like bismuth chloride, plate-like iron oxide, cholesteric liquid crystal polymers, and combinations thereof; 
 baking the second base glitter paint at a temperature ranging from room temperature to 160° C.; 
 applying a clear paint to the second base glitter paint, wherein the second base glitter paint is in a hardened state; and 
 baking the clear paint at a temperature ranging from room temperature to 160° C., wherein the resulting metallic tone glitter paint film obtains both a pearlescent gloss and a metallic gloss. 
 
     
     
       14. The method of  claim 13  wherein the mass of solid fraction of the very small scale-like pigment in the glitter paint is from 2 to 50 parts by mass per 100 parts by mass of resin solid fraction. 
     
     
       15. The method of  claim 13  wherein at least one of the aluminum pigment (A), the aluminum pigment (B) and the aluminum pigment (C) is selected from the group consisting of aluminum flake pigments, colored aluminum flake pigments, metal oxide coated aluminum flake pigments, vapor deposited aluminum flake pigments, and combinations thereof. 
     
     
       16. The method of  claim 13  wherein the ratio of the aluminum pigment (C) and very small scale-like pigment in the glitter paint is from 0:100 to 50:50 parts by mass. 
     
     
       17. A painted object which is furnished with a paint film which has been formed with the method of  claim 13 . 
     
     
       18. The method of  claim 13  wherein the metal oxide is selected from the group consisting of TiO 2 , Fe 2 O 3 , SnO 2 , ZrO 2 , and combinations thereof.